Introducing composite lattice core sandwich structure as an alternative proposal for engine hood

Yin, Sha; Chen, Haoyu; Wu, Yaobo; Li, Yibing; Xu, Jun

doi:10.1016/j.compstruct.2018.06.038

Cited by 116 publications

(44 citation statements)

References 28 publications

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“…These benefits of sandwich structures lead to wide range of engineering applications including integrated thermal protection systems, [18][19][20] marine manufacturing, 21,22 and aeronautical and aerospace industries. 23,24 Creative design 25 procedure for sandwich structure is described in Figure 2. First of all, investigating the formation and evolution mechanism of sandwich core structures by analyzing the geometric features.…”

Section: Introductionmentioning

confidence: 99%

Creative design for sandwich structures: A review

Feng

Qiu

Gao

et al. 2020

International Journal of Advanced Robotic Systems

101

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Sandwich structures are important innovative multifunctional structures with the advantages of low density and high performance. Creative design for sandwich structures is a design process based on sandwich core structure evolution mechanisms, material design method, and panel (including core structure and facing sheets) performance prediction model. The review outlines recent research efforts on creative design for sandwich structures with different core constructions such as corrugated core, honeycomb core, foam core, truss core, and folded cores. The topics discussed in this review article include aspects of sandwich core structure design, material design, and mechanical properties, and panel performance and damage. In addition, examples of engineering applications of sandwich structures are discussed. Further research directions and potential applications are summarized.

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Section: Introductionmentioning

confidence: 99%

Creative design for sandwich structures: A review

Feng

Qiu

Gao

et al. 2020

International Journal of Advanced Robotic Systems

101

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“…Results show that both the relative density and the geometrical features of the representative volume element (RVE) strongly affect the equivalent macroscopic elastic behavior of the lattice. In particular, they are useful for modeling lightweight sandwich panels with a lattice core and facings [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. However, the use of inclusions, as shown in Figure 3 , should be considered for modeling dowels whose withdrawal strength is dependent on the mounting and friction forces [ 44 , 45 , 46 , 47 , 48 ].…”

Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study on Withdrawal Strength of Different Types of Auxetic Dowels for Furniture Joints

2020

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Studies on the application of the auxetic metamaterials and structures in furniture joints are very limited. However, they have huge potential for use in ready-to-assemble furniture. This study aimed to design and produce different types of auxetic dowels in 3D printing technology, and experimentally and numerically analyze the withdrawal strength of these dowels. In the scope of the study, 24 auxetic dowels with different types and size of inclusions, a different diameter of holes, and a non-auxetic reference dowel were designed and produced with appropriate muffs. Dowels were 3D printed from polyamide (PA12). Poisson’s ratios, withdrawal strength, contact pressures, and friction coefficients of dowels were determined theoretically by means of numerical analyses and real static compression tests. After the pre-production of dowels, the dowels with triangular inclusions have not been found to have sufficient strength and stiffness. Withdrawal strength of dowels decreased as the size of inclusions is decreased, or dowel hole diameter is increased. Furthermore, contact pressures and stresses in auxetic dowels were considerably lower than non-auxetic dowels under the withdrawal force.

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“…Composite lattice trusses are high strength, lightweight structures that are being developed and implemented in disciplines including aerospace structures, automotive bodies, and civil infrastructure [ 1 , 2 , 3 ]. In addition to an excellent strength-to-weight ratio, these structures demonstrate substantial damping, stiffness, flexural capacity, and corrosion resistance [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Dimensional Analysis and Optimization of IsoTruss Structures with Outer Longitudinal Members in Uniaxial Compression

Opdahl

Jensen

2021

Materials

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This study analyzes the buckling behavior of 8-node IsoTruss® structures with outer longitudinal members. IsoTruss structures are light-weight composite lattice columns with diverse structural applications, including the potential to replace rebar cages in reinforced concrete. In the current work, finite element analyses are used to predict the critical buckling loads of structures with various dimensions. A dimensional analysis is performed by: deriving non-dimensional Π variables using Buckingham’s Π Theorem; plotting the Π variables with respect to critical buckling loads to characterize trends between design parameters and buckling capacity; evaluating the performance of the outer longitudinal configuration with respect to the traditional, internal longitudinal configuration possessing the same bay length, outer diameter, longitudinal radius, helical radius, and mass. The dimensional analysis demonstrates that the buckling capacity of the inner configuration exceeds that of the equivalent outer longitudinal structure for the dimensions that are fixed and tested herein. A gradient-based optimization analysis is performed to minimize the mass of both configurations subject to equivalent load criteria. The optimized outer configuration has about 10.5% less mass than the inner configuration by reducing the outer diameter whilst maintaining the same global moment of inertia.

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Introducing composite lattice core sandwich structure as an alternative proposal for engine hood

Cited by 116 publications

References 28 publications

Creative design for sandwich structures: A review

Creative design for sandwich structures: A review

Experimental and Numerical Study on Withdrawal Strength of Different Types of Auxetic Dowels for Furniture Joints

Dimensional Analysis and Optimization of IsoTruss Structures with Outer Longitudinal Members in Uniaxial Compression

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